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	</style></head><body><pre><span class='line'>  1</span> <span class="COMM">/****************************************************************************
<span class='line'>  2</span>  Copyright (c) 2010-2012 cocos2d-x.org
<span class='line'>  3</span>  Copyright (c) 2008-2010 Ricardo Quesada
<span class='line'>  4</span>  Copyright (c) 2011      Zynga Inc.
<span class='line'>  5</span>  Copyright (c) 2008-2009 Jason Booth
<span class='line'>  6</span> 
<span class='line'>  7</span>  http://www.cocos2d-x.org
<span class='line'>  8</span> 
<span class='line'>  9</span>  Permission is hereby granted, free of charge, to any person obtaining a copy
<span class='line'> 10</span>  of this software and associated documentation files (the "Software"), to deal
<span class='line'> 11</span>  in the Software without restriction, including without limitation the rights
<span class='line'> 12</span>  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
<span class='line'> 13</span>  copies of the Software, and to permit persons to whom the Software is
<span class='line'> 14</span>  furnished to do so, subject to the following conditions:
<span class='line'> 15</span> 
<span class='line'> 16</span>  The above copyright notice and this permission notice shall be included in
<span class='line'> 17</span>  all copies or substantial portions of the Software.
<span class='line'> 18</span> 
<span class='line'> 19</span>  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
<span class='line'> 20</span>  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
<span class='line'> 21</span>  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
<span class='line'> 22</span>  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
<span class='line'> 23</span>  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
<span class='line'> 24</span>  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
<span class='line'> 25</span>  THE SOFTWARE.
<span class='line'> 26</span>  ****************************************************************************/</span><span class="WHIT">
<span class='line'> 27</span> 
<span class='line'> 28</span> </span><span class="COMM">/**
<span class='line'> 29</span>  * cc.MotionStreak manages a Ribbon based on it's motion in absolute space.&lt;br/>
<span class='line'> 30</span>  * You construct it with a fadeTime, minimum segment size, texture path, texture&lt;br/>
<span class='line'> 31</span>  * length and color. The fadeTime controls how long it takes each vertex in&lt;br/>
<span class='line'> 32</span>  * the streak to fade out, the minimum segment size it how many pixels the&lt;br/>
<span class='line'> 33</span>  * streak will move before adding a new ribbon segment, and the texture&lt;br/>
<span class='line'> 34</span>  * length is the how many pixels the texture is stretched across. The texture&lt;br/>
<span class='line'> 35</span>  * is vertically aligned along the streak segment.
<span class='line'> 36</span>  * @class
<span class='line'> 37</span>  * @extends cc.Node
<span class='line'> 38</span>  */</span><span class="WHIT">
<span class='line'> 39</span> </span><span class="NAME">cc.MotionStreak</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">cc.Node.extend</span><span class="PUNC">(</span><span class="COMM">/** @lends cc.MotionStreak# */</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 40</span> </span><span class="WHIT">    </span><span class="NAME">_segThreshold</span><span class="PUNC">:</span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 41</span> </span><span class="WHIT">    </span><span class="NAME">_width</span><span class="PUNC">:</span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 42</span> </span><span class="WHIT">    </span><span class="NAME">_lastLocation</span><span class="PUNC">:</span><span class="NAME">cc.PointZero</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 43</span> 
<span class='line'> 44</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'> 45</span>      * @type cc.Ribbon
<span class='line'> 46</span>      */</span><span class="WHIT">
<span class='line'> 47</span> </span><span class="WHIT">    </span><span class="NAME">_ribbon</span><span class="PUNC">:</span><span class="KEYW">null</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 48</span> 
<span class='line'> 49</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'> 50</span>      * Ribbon used by MotionStreak (weak reference)
<span class='line'> 51</span>      * @return {cc.Ribbon}
<span class='line'> 52</span>      */</span><span class="WHIT">
<span class='line'> 53</span> </span><span class="WHIT">    </span><span class="NAME">getRibbon</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 54</span> </span><span class="WHIT">        </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="NAME">this._ribbon</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 55</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 56</span> 
<span class='line'> 57</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'> 58</span>      * @return {cc.Texture2D}
<span class='line'> 59</span>      */</span><span class="WHIT">
<span class='line'> 60</span> </span><span class="WHIT">    </span><span class="NAME">getTexture</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 61</span> </span><span class="WHIT">        </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="NAME">this._ribbon.getTexture</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 62</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 63</span> 
<span class='line'> 64</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'> 65</span>      * @param {cc.Texture2D} texture
<span class='line'> 66</span>      */</span><span class="WHIT">
<span class='line'> 67</span> </span><span class="WHIT">    </span><span class="NAME">setTexture</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">texture</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 68</span> </span><span class="WHIT">        </span><span class="NAME">this._ribbon.setTexture</span><span class="PUNC">(</span><span class="NAME">texture</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 69</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 70</span> 
<span class='line'> 71</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'> 72</span>      * @return {cc.BlendFunc}
<span class='line'> 73</span>      */</span><span class="WHIT">
<span class='line'> 74</span> </span><span class="WHIT">    </span><span class="NAME">getBlendFunc</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 75</span> </span><span class="WHIT">        </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="NAME">this._ribbon.getBlendFunc</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 76</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 77</span> 
<span class='line'> 78</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'> 79</span>      * @param {Number} src
<span class='line'> 80</span>      * @param {Number} dst
<span class='line'> 81</span>      */</span><span class="WHIT">
<span class='line'> 82</span> </span><span class="WHIT">    </span><span class="NAME">setBlendFunc</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">src</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">dst</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 83</span> </span><span class="WHIT">        </span><span class="NAME">this._ribbon.setBlendFunc</span><span class="PUNC">(</span><span class="NAME">src</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">dst</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 84</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 85</span> 
<span class='line'> 86</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'> 87</span>      * Constructor
<span class='line'> 88</span>      */</span><span class="WHIT">
<span class='line'> 89</span> </span><span class="WHIT">    </span><span class="NAME">ctor</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 90</span> </span><span class="WHIT">        </span><span class="NAME">this._super</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 91</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 92</span> 
<span class='line'> 93</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'> 94</span>      * initializes a MotionStreak. The file will be loaded using the TextureMgr.
<span class='line'> 95</span>      * @param {Number} fade
<span class='line'> 96</span>      * @param {Number} seg
<span class='line'> 97</span>      * @param {String} imagePath
<span class='line'> 98</span>      * @param {Number} width
<span class='line'> 99</span>      * @param {Number} length
<span class='line'>100</span>      * @param {cc.Color4B} color
<span class='line'>101</span>      * @return {Boolean}
<span class='line'>102</span>      */</span><span class="WHIT">
<span class='line'>103</span> </span><span class="WHIT">    </span><span class="NAME">initWithFade</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">fade</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">seg</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">imagePath</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">width</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">length</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">color</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>104</span> </span><span class="WHIT">        </span><span class="NAME">this._segThreshold</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">seg</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>105</span> </span><span class="WHIT">        </span><span class="NAME">this._width</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">width</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>106</span> </span><span class="WHIT">        </span><span class="NAME">this._lastLocation</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">cc.PointZero</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>107</span> </span><span class="WHIT">        </span><span class="NAME">this._ribbon</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">cc.Ribbon.create</span><span class="PUNC">(</span><span class="NAME">this._width</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">imagePath</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">length</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">color</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">fade</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>108</span> </span><span class="WHIT">        </span><span class="NAME">this.addChild</span><span class="PUNC">(</span><span class="NAME">this._ribbon</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>109</span> 
<span class='line'>110</span> </span><span class="WHIT">        </span><span class="COMM">// update ribbon position. Use schedule:interval and not scheduleUpdated. (cocos2d-iphone)issue #1075</span><span class="WHIT">
<span class='line'>111</span> </span><span class="WHIT">        </span><span class="NAME">this.schedule</span><span class="PUNC">(</span><span class="NAME">this.update</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>112</span> </span><span class="WHIT">        </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="KEYW">true</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>113</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>114</span> 
<span class='line'>115</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'>116</span>      * polling function
<span class='line'>117</span>      */</span><span class="WHIT">
<span class='line'>118</span> </span><span class="WHIT">    </span><span class="NAME">update</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">delta</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>119</span> </span><span class="WHIT">        </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">location</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.convertToWorldSpace</span><span class="PUNC">(</span><span class="NAME">cc.PointZero</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>120</span> </span><span class="WHIT">        </span><span class="NAME">this._ribbon.setPosition</span><span class="PUNC">(</span><span class="NAME">cc.p</span><span class="PUNC">(</span><span class="PUNC">-</span><span class="NUMB">1</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NAME">location.x</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="PUNC">-</span><span class="NUMB">1</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NAME">location.y</span><span class="PUNC">)</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>121</span> </span><span class="WHIT">        </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">len</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">cc.pLength</span><span class="PUNC">(</span><span class="NAME">cc.pSub</span><span class="PUNC">(</span><span class="NAME">this._lastLocation</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">location</span><span class="PUNC">)</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>122</span> </span><span class="WHIT">        </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">len</span><span class="WHIT"> </span><span class="PUNC">></span><span class="WHIT"> </span><span class="NAME">this._segThreshold</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>123</span> </span><span class="WHIT">            </span><span class="NAME">this._ribbon.addPointAt</span><span class="PUNC">(</span><span class="NAME">location</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">this._width</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>124</span> </span><span class="WHIT">            </span><span class="NAME">this._lastLocation</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">location</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>125</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>126</span> </span><span class="WHIT">        </span><span class="NAME">this._ribbon.update</span><span class="PUNC">(</span><span class="NAME">delta</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>127</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>128</span> </span><span class="PUNC">}</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>129</span> 
<span class='line'>130</span> </span><span class="COMM">/**
<span class='line'>131</span>  * creates the a MotionStreak. The image will be loaded using the TextureMgr.
<span class='line'>132</span>  * @param {Number} fade time to fade
<span class='line'>133</span>  * @param {Number} seg minimum segment size
<span class='line'>134</span>  * @param {String} imagePath texture path
<span class='line'>135</span>  * @param {Number} width texture width
<span class='line'>136</span>  * @param {Number} length texture length
<span class='line'>137</span>  * @param {cc.Color4B} color color
<span class='line'>138</span>  * @return {cc.MotionStreak}
<span class='line'>139</span>  */</span><span class="WHIT">
<span class='line'>140</span> </span><span class="NAME">cc.MotionStreak.create</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">fade</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">seg</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">imagePath</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">width</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">length</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">color</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>141</span> </span><span class="WHIT">    </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">ret</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">new</span><span class="WHIT"> </span><span class="NAME">cc.MotionStreak</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>142</span> </span><span class="WHIT">    </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">ret</span><span class="WHIT"> </span><span class="PUNC">&&</span><span class="WHIT"> </span><span class="NAME">ret.initWithFade</span><span class="PUNC">(</span><span class="NAME">fade</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">seg</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">imagePath</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">width</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">length</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">color</span><span class="PUNC">)</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>143</span> </span><span class="WHIT">        </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="NAME">ret</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>144</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>145</span> </span><span class="WHIT">    </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="KEYW">null</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>146</span> </span><span class="PUNC">}</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>147</span> </span></pre></body></html>